Habe unter
http://mac.elated.com/2007/02/02/why-cant-you-turn-off-the-screen/
die Anleitung eines "Lewis" gefunden, die Sache aber noch nicht getestet.
Andere User wohl schon: ("Wow Lewis, I’m seriously impressed! Thanks so much for posting that solution. I hope it helps others solve this annoying problem.")
Es scheint also zu funktionieren.
# Lewis Says:
November 8th, 2008 at 7:56 pm
I believe I have found a solution to this problem and it doesn’t involve having to set a dark desktop background, use Shades or brightness dimmers, use black screen savers, use ‘hot corners in expose’ to sleep or power save the imac or have to make black videos and pause them on one display as none of the methods are really very practical or fully solve the problem . So, here’s what I did.
My setup is;
Mini DVI to DVI + HDMI video adapter (made by ex-pro) then an HDMI lead connecting my iMac to my HD LCD TV.
First of all you need to set up the arrangement settings for the two displays.
Begin by choosing Apple > System Preferences, then click Displays. By default, the Display pane appears. If you have recently added an external display, click the Detect Displays button so that Mac OS X can adjust to the change in the hardware configuration. Then click the Arrangement tab to open the Arrangement pane
By default, Mac OS X mirrors your primary display on external displays. That means that all the displays always show exactly the same thing. Mirroring doesn’t increase your screen area, to make that magic happen, deselect the “Mirror Displays” checkbox at the bottom of the Arrangement pane
As soon as you turn off mirroring, extended desktop mode kicks in and the amount of usable screen area grows by the size of the external display(s). Before you begin spreading out into all this space, take a moment to configure two things.
First, drag the thumbnails of the displays so that they mimic the physical arrangement of your displays (as you drag a thumbnail, its edge turns red, as does the edge of the actual display it represents). For example, if the top edges of both displays line up in the real world, make their thumbnails align, too. That way when you move the cursor from one display to another, it acts as if the two desktops were one big expanse of pixels instead of jumping up or down when it crosses the border.
Second, after setting up the arrangement, set your iMac as the primary display. This is where the menu bar, Dock, and Finder icons appear, and where applications open new windows. To designate your primary display in the Arrangement pane, drag the thin white menu bar to the appropriate thumbnail.
With the arrangement set and the primary display designated, you should check that your extended desktop is working correctly. Quit System Preferences, return to the Finder, then choose Finder > Hide Others to clear away unnecessary window clutter. Now move your cursor to the edge of one display and watch it appear on the next display as if the two separate displays were one large continuous display.
Now you need to open the movie you want to watch in Quicktime drag and position the Quicktime window within the TV’s display (now hear comes the clever part) you have to tell Quicktime to output the movie to the TV and black the imac screen – to do this read on)
Select Quciktime Player > Preferences. Under the ‘Full Screen’ Tab you need to click the TV’s display in the top white box, so the Quicktime logo appears within this display. Then, set the movie size to ‘fill screen’, set the background colour to ‘Black’ and check the tick box that says ’show on all displays’. Close the preferences tab. With the Quicktime window positioned within the TV’s display start to play your movie then, click View > Fit to screen (Shortcut – Command + 3) then click View > Enter Full Screen (Shortcut – Command + F)
TV then displays movie full screen, iMac screen goes black…. problem solved thank you and good night.
Lewis
